Remove references to deprecated v1 Android embedding

[reidbaker]

To ensure this plugin will work with users running the next stable version of Flutter remove references to the v1 embedding.

The v1 embedding was deprecated around 6 and a half years ago. In Flutter 3.22, the Flutter tool dropped support for building v1 apps entirely. Flutter plans to delete version one of it's Android embedding in the next stable release, per https://medium.com/flutter/whats-new-in-flutter-3-22-fbde6c164fe3 (in the "Removal of v1 Android embedding" section).

When that deletion happens, any apps using plugins that still have references to the removed classes will fail to build when updating to the next stable version (probably Flutter 3.26).

As a part of this deprecation, the Flutter Android team is doing community outreach by filing bugs and submitting some pull requests to update plugins to minimize the impact this removal has on the community.

Some example PRs:

• Flutter team maintained plugins: https://github.com/flutter/packages/pull/6494
• android_alarm_manager_plus https://github.com/fluttercommunity/plus_plugins/pull/2864

Consequences:

• This change should have no impact on users of this plugin that are building apps using the v2 embedding (we don't have a percentage to share, but this is the vast majority of users).
• It will remove support for users that are still using the v1 embedding on versions of Flutter older than 3.22.

If this change doesn't land, this plugin will instead be broken for all apps building on the next stable version of Flutter and beyond.

Is there a way to support both v1 and v2 embedding apps in the next stable version of Flutter?

No.

This is the PR where we are removing the deprecated engine classes: https://github.com/flutter/engine/pull/52022

[reidbaker]

This file initally had me report this issue but I believe this is a generated file. https://github.com/kalismeras61/flutter_page_transition/blob/master/android/app/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java

Searching with https://github.com/search?q=repo%3Akalismeras61%2Fflutter_page_transition+%28%22io.flutter.view.FlutterMain%22+OR+%22io.flutter.view.FlutterNativeView%22+OR+%22io.flutter.view.FlutterView%22+OR+%22io.flutter.embedding.engine.plugins.shim%22+OR+%22io.flutter.app%22+OR+%22PluginRegistry.Registrar%22%29+&type=code shows no references to the classes we are removing.

I could not get the example app to build so I cant verify this plugin builds against the example branch we linked.

Leaving this bug and comment as an FYI. It is likely your plugin is ok as is.